ATH-CHX5 SonicFuel Hybrid Earbud Headphones Unique innovative hybrid design nestles in the ear without going inside the ear canal Ideal for those who love the portability, but dont like the feeling, of conventional in ear headphones Open air headphones deliver clear, high frequency with well balanced mids and bass for truly superior sound Features a sound isolating design that effectively reduces sound leakage so nothing can interior with your music Flat cord design helps keep the cord from knotting and bunching so it's always ready to go when you are